Neonatal characteristics
Table 4 presents the neonatal characteristics of singletons and twins in
the different post-thawed culture period groups. No significant
differences were present in regard to gestational age, preterm labor
rate, birthweight, low birthweight rate, cesarean section rate, sex
ratio and congenital malformation rate between the two groups. The
results also indicated that the singleton had a higher average
gestational age and birthweight as well as a lower cesarean section
rate, preterm labor rate and low birthweight rate than the twins in the
groups S and L (P values were all less than 0.001).